package net.sourceforge.fenixedu.presentationTier.Action.pedagogicalCouncil;

import java.util.Collections;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.fenixedu.dataTransferObject.pedagogicalCouncil.elections.ElectionPeriodBean;
import net.sourceforge.fenixedu.domain.CurricularYear;
import net.sourceforge.fenixedu.domain.Degree;
import net.sourceforge.fenixedu.domain.ExecutionYear;
import net.sourceforge.fenixedu.domain.accessControl.groups.StudentsByDegreeAndCurricularYear;
import net.sourceforge.fenixedu.domain.degree.DegreeType;
import net.sourceforge.fenixedu.domain.organizationalStructure.PedagogicalCouncilUnit;
import net.sourceforge.fenixedu.domain.util.email.EmailBean;
import net.sourceforge.fenixedu.domain.util.email.Recipient;
import net.sourceforge.fenixedu.presentationTier.Action.base.FenixDispatchAction;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.MessageResources;

import pt.ist.fenixWebFramework.renderers.utils.RenderUtils;

public class SendEmailToStudents extends FenixDispatchAction {

    public ActionForward prepare(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	final ExecutionYear currentExecutionYear = ExecutionYear.readCurrentExecutionYear();

	ElectionPeriodBean bean = new ElectionPeriodBean();
	bean.setDegreeType(DegreeType.BOLONHA_INTEGRATED_MASTER_DEGREE); // default
	bean.setExecutionYear(currentExecutionYear); // default

	return selectDegreeType(mapping, actionForm, request, response, bean);
    }

    public ActionForward selectDegreeType(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response, ElectionPeriodBean electionPeriodBean) throws Exception {
	final ExecutionYear currentExecutionYear = ExecutionYear.readCurrentExecutionYear();
	request.setAttribute("currentExecutionYear", currentExecutionYear);
	if (electionPeriodBean == null) {
	    Integer degreeOID = Integer.parseInt(request.getParameter("degreeOID"));
	    final Degree degree = rootDomainObject.readDegreeByOID(degreeOID);

	    electionPeriodBean = new ElectionPeriodBean();
	    electionPeriodBean.setDegree(degree);
	    electionPeriodBean.setDegreeType(degree.getDegreeType());
	    electionPeriodBean.setExecutionYear(currentExecutionYear); // default
	} else {
	    if (electionPeriodBean.getExecutionYear() == null) {
		electionPeriodBean.setExecutionYear(currentExecutionYear); // default
	    }
	    if (electionPeriodBean.getDegreeType() == null) {
		electionPeriodBean.setDegreeType(DegreeType.BOLONHA_INTEGRATED_MASTER_DEGREE); // default
	    }
	}

	request.setAttribute("electionPeriodBean", electionPeriodBean);
	request.setAttribute("currentExecutionYear", currentExecutionYear);
	request.setAttribute("degrees", Degree.readAllByDegreeType(electionPeriodBean.getDegreeType()));
	return mapping.findForward("showDegrees");
    }

    public ActionForward selectDegreeTypePostBack(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	ElectionPeriodBean periodBean = (ElectionPeriodBean) getRenderedObject();
	RenderUtils.invalidateViewState();

	return selectDegreeType(mapping, actionForm, request, response, periodBean);

    }

    public ActionForward sendMail(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	ExecutionYear executionYear = ExecutionYear.readExecutionYearByName(request.getParameter("executionYear"));
	CurricularYear curricularYear = CurricularYear.readByYear(Integer.valueOf(request.getParameter("curricularYear")));
	Degree degree = rootDomainObject.readDegreeByOID(Integer.valueOf(request.getParameter("degreeId")));

	StudentsByDegreeAndCurricularYear studentsByDegreeAndCurricularYear = new StudentsByDegreeAndCurricularYear(degree,
		curricularYear, executionYear);

	String message = MessageResources.getMessageResources("resources.PedagogicalCouncilResources").getMessage(
		"label.mail.student.year.degree", curricularYear.getYear().toString(), degree.getSigla());

	Recipient recipient = Recipient.newInstance(message, studentsByDegreeAndCurricularYear);
	EmailBean bean = new EmailBean();
	bean.setRecipients(Collections.singletonList(recipient));
	bean.setSender(PedagogicalCouncilUnit.getPedagogicalCouncilUnit().getUnitBasedSender().iterator().next());

	request.setAttribute("emailBean", bean);

	return mapping.findForward("sendEmail");
    }
}